JP2007279101A - Method for manufacturing liquid crystal device, liquid crystal device, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a liquid crystal device for forming a flat color layer and to provide a liquid crystal device and an electronic apparatus. <P>SOLUTION: The liquid crystal device has a color filter having a plurality of color layers formed according to a plurality of sub-pixels constituting pixels, and the method is characterized in that: at least one color layer in the plurality of color layers 16B, 16EG, 16R, 16YG has a different film thickness from others; and the method includes steps of forming the plurality of color layers in the order from a thinner layer in the plurality of color layers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a liquid crystal device, a liquid crystal device, and an electronic apparatus.

In general, a liquid crystal device mounted as a display unit of a mobile phone or the like is composed of a pair of substrates that are disposed to face each other with a liquid crystal layer interposed therebetween and that have electrodes for applying a voltage to the liquid crystal layer. In such a liquid crystal device, a color filter is formed on one of a pair of substrates.
This color filter is formed on a base material made of transparent glass, for example, R (red), G (green), B (
The coloring elements of three colors (blue) are formed in a predetermined arrangement.

Further, as a method for manufacturing a color filter used in a liquid crystal device, for example, a method using a spin coat method has been proposed (for example, see Patent Document 1). After forming the black matrix surrounding the outer frame of each pixel area on the substrate, the thickness of the colored pixels in the transmissive area and the reflective area is controlled between the black matrices to facilitate the formation of colored pixel areas having different densities. A transparent pattern layer is provided. Thereafter, a red photosensitive resist is applied to the entire surface by a spinner. Then, patterning such as exposure and development is performed to form red colored pixels at predetermined positions on the glass. Next, a green photosensitive resist and a blue photosensitive resist are sequentially applied to form green colored pixels and blue colored pixels.
JP 2003-295180 A

However, in the manufacturing method of the color filter of the liquid crystal device described in Patent Document 1, the order of applying the colored photosensitive resists is not taken into consideration, so when applying the second and subsequent colors,
Application failure due to the previous color filter pattern occurs. That is, each colored photosensitive resist dropped on the center of the substrate may become radial stripe-shaped unevenness from the center of the substrate to the outside as the spinner rotates. As a result, the display characteristics of the liquid crystal device are deteriorated.

In addition to the case of using a spin coating method, for example, when a color filter is produced using a laminating method without considering the order of each colored layer, the adhesion of the material constituting the color filter to the substrate This causes a problem of lowering.

SUMMARY An advantage of some aspects of the invention is that it provides a method of manufacturing a liquid crystal device, a liquid crystal device, and an electronic apparatus that can form a colored layer flatly.

  In order to achieve the above object, the present invention provides the following means.

The method for manufacturing a liquid crystal device according to the present invention is a method for manufacturing a liquid crystal device including a color filter having a plurality of colored layers formed corresponding to a plurality of sub-pixels constituting a pixel, wherein the plurality of colored layers And the step of forming the plurality of colored layers in order of decreasing film thickness among the plurality of colored layers.

In the method for manufacturing a liquid crystal device according to the present invention, the method for manufacturing a liquid crystal device according to the present invention includes:
After forming a colored layer having a thin film thickness among the plurality of colored layers, a colored layer having a film thickness larger than this film thickness is formed. Here, when a thick colored layer is formed first among a plurality of colored layers, a thin colored layer is formed between thick ones. In the case of this method, the thin colored layer is not a flat film because the concave portion having a large step is formed by the adjacent colored layer, and the central portion becomes thin. However, in the manufacturing method of the present invention, the thin colored layer forms a recess having a shallower depth than the conventional one, and since the thick colored layer is formed in the recess, the colored layer is formed flat. It becomes possible to do.

  In addition, the order which forms the colored layer with the same film thickness among several colored layers does not ask | require.

In the method for manufacturing a liquid crystal device of the present invention, it is preferable to apply a colorant constituting the plurality of colored layers on the substrate by a spin coating method.

In the method for manufacturing a liquid crystal device according to the present invention, the colorant constituting the colored layer can be applied all over the substantially entire surface of the substrate by spin coating. Thereby, for a plurality of pixels,
It becomes possible to apply the colorant easily and quickly.

In addition, after forming a thin colored layer among a plurality of colored layers, a colored layer having a thickness greater than this thickness is formed. The portion that becomes the step formed by the colored layer adjacent to the concave portion of the colored layer to be formed becomes smaller. Thereby, a coloring material can be accurately applied on the substrate.

Moreover, it is preferable that the manufacturing method of the liquid crystal device of the present invention forms the plurality of colored layers on the substrate by a laminating method.

In the method for manufacturing a liquid crystal device according to the present invention, by forming a plurality of colored layers into a film shape,
By the laminating method, the colored layer can be formed on the substrate with a uniform film thickness. In addition, after forming a colored layer having a thin film thickness among a plurality of colored layers, a colored layer having a film thickness larger than this film thickness is formed. The depth of the recess between the layers becomes shallow. This makes it possible to improve the adhesion of the colored layer formed on the substrate.

  A liquid crystal device of the present invention is manufactured by the above-described method for manufacturing a liquid crystal device.

In the liquid crystal device according to the present invention, since the plurality of colored layers are formed in order of increasing film thickness among the plurality of colored layers, the colored layers can be formed flat on the substrate.

The liquid crystal device of the present invention further includes a reflective display region and a transmissive display region in the sub-pixel, and the thickness of the colored layer formed in the reflective display region and the color formed in the transmissive display region. It is preferable that the layer thickness is different.

First, in a transflective liquid crystal device, light emitted from a light source passes through the colored layer once in the transmissive display area, and light emitted from the light source passes through the colored layer twice in the reflective display area. To Penetrate. Thereby, if the film thicknesses of the transmissive display region and the reflective display region are formed to be the same, the color purity of light emitted from the reflective display region that transmits twice is deteriorated. Therefore, the color purity of the light emitted from the reflective display area and the light emitted from the transmissive display area is reduced by making the thickness of the colored layer in the reflective display area thinner than the thickness of the colored layer in the transmissive display area. And the brightness can be the same. Thereby, in the liquid crystal device according to the present invention, when the colored layers having different film thicknesses are formed, a color filter having excellent performance can be obtained by forming the colored layers in order from the thin colored layer.

By adopting such a display method that combines a reflective type and a transmissive type, the display mode can be switched to either the reflective mode or the transmissive mode according to the ambient brightness while reducing power consumption. A clear display can be performed even in a dark state, and for example, it can be suitable for a display portion of a portable device.

  An electronic apparatus according to the present invention includes the above-described liquid crystal device.

With this configuration, since the liquid crystal device has a color filter in a good state, an electronic device capable of displaying a clearer image can be provided.

Hereinafter, embodiments of a method for manufacturing a liquid crystal device, a liquid crystal device, and an electronic apparatus according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

First, prior to the description of the manufacturing method of the liquid crystal device of the present invention, the structure of the liquid crystal device according to the present invention will be described.
[Overall configuration of liquid crystal device]
FIG. 1 is a plan view showing the structure of the liquid crystal device according to the first embodiment, and FIG.
FIG. 3 is a diagram illustrating a circuit configuration of the liquid crystal device, and FIG. 4 is a process diagram illustrating a method for manufacturing the liquid crystal device of FIG. 1.

As shown in FIGS. 1 and 2, the liquid crystal device 1 of the present embodiment includes a sealing material 7 in which a liquid crystal panel 10 including a pair of substrates, a TFT array substrate 4, and a color filter substrate 5 has a substantially rectangular frame shape in plan view. The TN (Twisted Nematic) type liquid crystal layer 8 having a positive dielectric anisotropy is enclosed in a region surrounded by the sealing material 7.

A peripheral parting 9 having a rectangular frame shape in plan view is formed along the inner peripheral side of the sealing material 7, and a region inside the peripheral parting is a display area 100. Moreover, as shown in FIG.
A light source unit 30 that irradiates the liquid crystal panel 10 with light as a backlight is provided.

In the display area 100, pixel areas (pixels) A are provided in a matrix. As shown in FIG. 2, the pixel area A is composed of four sub-pixels B that are the minimum unit of the display area 100.

Further, in the area outside the sealing material 7, the data line driving circuit 101 and the external circuit mounting terminal 1 are provided.
02 is formed along one side (lower side in the figure) of the TFT array substrate 4, and the scanning line driving circuit 104 is formed along two sides adjacent to the one side to constitute a peripheral circuit.

On the remaining one side (illustrated upper side) of the TFT array substrate 4, a plurality of wirings 105 are provided for connecting the scanning line driving circuits 104 on both sides of the display area 100. In addition, an inter-substrate conductive material 106 for providing electrical continuity between the TFT array substrate 4 and the color filter substrate 5 is disposed at each corner of the color filter substrate 5. The liquid crystal device 1 of this embodiment is configured as a transmissive liquid crystal device, modulates light from a light source (not shown) arranged on the TFT array substrate 4 side, and emits it as display light from the color filter substrate 5 side. It is like that.

  FIG. 3 is an equivalent circuit diagram of the liquid crystal device.

As shown in the figure, a plurality of pixel areas A are arranged in a matrix in the display area 100 of the liquid crystal device, and pixel electrodes 11 are arranged in the sub-pixels B of the pixel area A, respectively. . A TFT element 12 is formed on the side of the pixel electrode 11. TFT
The element 12 is a switching element that controls energization to the pixel electrode 11. A data line 6 a is connected to the source side of the TFT element 12. Image data S1, S2,..., Sn are supplied to each data line 6a from, for example, a data line driving element.

A scanning line 3 a is connected to the gate side of the TFT element 12. In the scanning line 3a,
For example, scanning signals G1, G2,..., Gm are pulsed at predetermined timing from the scanning line driving element.
Is to be supplied. Further, the pixel electrode 11 is connected to the drain side of the TFT element 12.

When the TFT element 12 as a switching element is turned on for a certain period by the scanning signals G1, G2,..., Gm supplied from the scanning line 3a, the image signals S1, S2,. Sn is written to the sub-pixel B in the pixel area A through the pixel electrode 11 at a predetermined timing.

Image signals S1, S2,..., Sn written at a predetermined level in the sub-pixel B of the pixel region A are held for a certain period by a liquid crystal capacitor formed between the pixel electrode 11 and a common electrode described later.
In order to prevent the stored image signals S1, S2,..., Sn from leaking, a storage capacitor 14 is formed between the pixel electrode 11 and the capacitor line 3b, and is arranged in parallel with the liquid crystal capacitor. . Thus, when a voltage signal is applied to the liquid crystal, the alignment state of the liquid crystal molecules changes depending on the applied voltage level. As a result, the light source light incident on the liquid crystal is modulated to generate image light.

  Next, details of the liquid crystal panel 10 will be described.

As shown in FIG. 2, a plurality of scanning lines (not shown) and a plurality of data lines (not shown) are formed in a matrix on the surface of the TFT array substrate 4 on the liquid crystal layer 8 side. A pixel electrode 11 is provided for each sub-pixel B in the pixel region A surrounded by the data line. A TFT element 12 is provided at a position where the scanning line and the data line intersect, and each pixel electrode 11 is connected to the data line via the TFT element 12. Accordingly, when a signal is applied to the scanning line and the data line, the TFT element 12 is turned on / off, and the signal is written to the pixel electrode 11. A horizontal alignment film 13 that has been subjected to a rubbing process is formed on the entire surface of the TFT element 12 and the pixel electrode 11.

On the surface of the color filter substrate 5 on the liquid crystal layer 8 side, as shown in FIG.
The overcoat layer 17, the common electrode 18, and the horizontal alignment film 19 are stacked in this order.

The color filter 16 includes a light shielding portion 16a and red and yellow-green (yellowish green).
, Emerald green and blue colored portions (colored layers) 16R, 16YG, 16EG, 16
B, and the light shielding portion 16a is formed in a matrix so as to partition the colored portions 16R, 16YG, 16EG, and 16B.

The red wavelength band is 600 nm or more, and the yellow-green wavelength band is 520 nm to 57 nm.
The wavelength band of emerald green is 490 nm to 520 nm, and the wavelength band of blue is 400 nm to 490 nm.

Further, the red colored portion 16R has a thickness of 2.2 μm, and the yellow-green colored portion 16YG has a thickness of 2 μm.
. The film thickness of 3 μm, emerald green colored portion 16EG is 2.3 μm, blue colored portion 1
The film thickness of 6B is 2.0 μm. Further, the color filter 16 includes colored portions 16B,
The colored portion 16R, the colored portion 16EG, and the colored portion 16YG are formed in this order.

The light shielding portion 16a is made of, for example, a black photosensitive resin film. The alignment film 13
, 19 are rubbed so that the liquid crystal molecules of the liquid crystal layer 8 are horizontally aligned in the initial alignment state.

The pixel electrode 11 and the common electrode 18 are made of a light-transmitting conductive material such as ITO, and the alignment films 13 and 19 are made of polyimide or the like. In addition, TFT
The array substrate 4 and the color filter substrate 5 are light-transmitting substrates made of a transparent material such as glass, for example.
[Method of manufacturing liquid crystal device]
Next, a method for manufacturing a liquid crystal device will be described. The manufacturing method of the TFT array substrate 4 is manufactured by a well-known method, so that the description thereof is omitted, and only the manufacturing method of the color filter substrate 5 is described. In the present embodiment, a case where a color filter is manufactured by a spin coating method will be described.

First, a black photosensitive resin film is applied to a predetermined thickness on the glass substrate 51 by a method such as spin coating, and is patterned by using a photolithography technique to form the light shielding portion 16a.

Next, among the colored portions 16R, 16YG, 16EG, and 16B, the film thickness is the thinnest (film thickness 2.0
μm) The blue colored portion 16B is formed.

As shown in FIG. 4A, a substrate 51 including a light shielding portion 16a is formed by a spinner (not shown).
A blue resist is applied to cover the entire upper surface to form a blue resist layer 52B. In a state where a photomask 53 having a predetermined shape is placed on the blue resist layer 52B,
For example, the ultraviolet light R is irradiated from the photomask 53 toward the substrate 51. Thereafter, development is performed, and a blue colored portion 16B is formed on the substrate 51 as shown in FIG.

  At this time, a concave portion 55 is formed on the substrate 51 by the colored portion 16B.

Next, the red colored portion 16R having the second smallest thickness (thickness: 2.2 μm) is formed. In the coloring portion 16R, a red resist is applied by a spinner in the same manner as the blue coloring portion 16B, and then exposure and development are performed. As shown in FIG. 4C, the red coloring portion 16R is formed on the substrate 51.
Is formed. At this time, a concave portion 56 is formed on the substrate 51 by the colored portions 16B and 16R.

Next, the thickest of the colored portions 16R, 16YG, 16EG, and 16B (thickness 2.3).
μm) The colored portions 16EG and 16YG are formed. First, the colored portion 16EG is formed. Similarly to the blue colored portion 16 </ b> B, the colored portion 16 </ b> EG is coated with an emerald green resist by a spinner, and then exposed and developed. The

Next, the colored portion 16YG is formed. Similarly to the blue colored portion 16B, the colored portion 16YG is coated with a yellow-green resist using a spinner, and then exposed and developed. FIG. 4 (d)
As shown in FIG. 5, a yellowish green colored portion 16 </ b> R is formed in the concave portion 56 on the substrate 51. In addition, since the film thicknesses of the emerald green colored portion 16EG and the yellow green colored portion 16YG are the same, whichever may be formed first.

Next, after the color filter 16 is formed, an overcoat layer 17 made of a light-transmitting resin is formed by spin coating or the like so as to cover the entire surface of the color filter 16. Then, a transparent ITO film is formed on the overcoat layer 17 as a common electrode 18 by physical vapor deposition such as sputtering. Further, on this common electrode 18, for example,
The alignment film 19 is formed by baking after applying the polyimide solution. The alignment film 19 is subjected to an alignment process such as a rubbing process. In this way, the color filter substrate 5
Is formed.

In the manufacturing method of the liquid crystal device 1 according to the present embodiment, the order of decreasing film thickness (colored portions 16B, 16R,
By forming them in the order of 16EG and 16YG, the recesses 55 that are lower than conventional ones are formed. That is, in the conventional manufacturing method shown in FIG.
When EG, 16YG is formed first, the depth of the recess 60 between the colored portions 16EG, 16YG is:
It is deeper than the depth of the recesses 55 and 56 of this embodiment. Thereby, in the conventional method, the central part of the colored part is formed to be depressed. However, according to the present invention, since the colored portions 16B, 16EG, and 16YG are formed in the concave portions 55 and 56 that are shallower than the conventional one, the colored portions 16B, 16R, 16EG, and 16YG can be formed flat. It becomes.

In addition, when forming the color filter 16 by the manufacturing method mentioned above, the adjacent coloring part 16 is used.
The end faces of R, 16EG, 16B, and 16YG are preferably in contact with each other, but the colored portions 16R,
As shown in FIG. 6, the end portions 16b and 16c of the colored portions are formed so that 16EG and 16YG are always formed between the light shielding portions 16a.

In the case of this configuration, the thick colored portion 16EG is formed on the thin colored portions 16B and 16R.
, 16YG, the step in the portion where the end of the adjacent colored portion 16B and the end of the colored portion 16EG overlap, or the portion where the end of the adjacent colored portion 16R and the end of the colored portion 16YG overlap. However, it is smaller than when a thin colored layer is formed on a thick colored layer. Therefore, a flat colored layer can be formed.
[Second Embodiment]
Next, a second embodiment according to the present invention will be described with reference to FIGS. In addition,
In each embodiment described below, portions having the same configuration as those of the liquid crystal device 1 according to the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

The liquid crystal device according to this embodiment is different from the first embodiment in that it is a transflective liquid crystal device. In the present embodiment, a passive matrix transflective liquid crystal device will be described.

FIG. 7 is a schematic plan view of the color filter and the light shielding layer provided in the transflective liquid crystal device of the present embodiment when viewed from the liquid crystal layer side, and FIG. 8 is the transflective type of the present embodiment. FIG. 9 is a partial schematic cross-sectional view of the liquid crystal device, and FIG. 9 is an enlarged view of a main part of the color filter substrate.

As shown in FIG. 8, the transflective liquid crystal device 70 according to this embodiment includes a color filter substrate 81 and a counter substrate 82 which are arranged to face each other with a liquid crystal layer 85 interposed therebetween.
And a light source unit 90 disposed on the opposite side of the liquid crystal panel 78 from the viewing side.

On the color filter substrate 81 and the counter substrate 82, as shown in FIG. 7, a plurality of transparent electrodes 91 and 92 made of indium tin oxide (ITO) and the like are formed, respectively, arranged in a stripe shape. The transparent electrode 91 of the filter substrate 81 and the transparent electrode 92 of the counter substrate 82 extend in directions that intersect each other. A rectangular portion where the transparent electrode 91 of the color filter substrate 81 and the transparent electrode 92 of the counter substrate 82 intersect and its peripheral portion are each dot 93, and a region in which a large number of dots 93 are arranged in a matrix. Is the display area.

More specifically, in the color filter substrate 81, the liquid crystal layer 85 side of the substrate body 81a is made of a light reflective material such as aluminum, silver, or a silver alloy as shown in FIG.
3 is formed with a transflective layer 95 having a slit-like opening 95a formed at the substantially central portion 3 and an opening 95b formed at the peripheral edge of each dot 93. This transflective layer 9
5, the opening 95a functions as a light transmitting portion that transmits light, and a region other than the portion where the openings 95a and 95b are formed functions as a light reflecting portion that reflects light.

Further, on the liquid crystal layer 85 side of the transflective layer 95, a light transmissive portion (opening 9) of the transflective layer 95 is provided.
5a), the color filter 71 of the transmissive display area is formed, and the light reflecting portion of the transflective layer 95 (the area excluding the portions where the openings 95a and 95b are formed)
The color filter 72 in the reflective display area having a different film thickness from the color filter 71 in the transmissive display area.
Is formed.

Here, the color filter 71 in the transmissive display area includes a red (R) coloring portion 71R, a green (G) coloring portion 71G, and a blue (B) coloring portion 71B. Dot 9
3 is formed in a predetermined pattern. The color filter 7 in the reflective display area
2, similarly to the color filter 71 in the transmissive display area, a red (R) colored portion 72 </ b> R, green (G)
The colored portion 72G and the blue (B) colored portion 72B are formed, and each colored portion is formed in a predetermined pattern corresponding to each dot 93.

The opening 95b of the transflective layer 95 is made of a black resin containing black particles such as carbon particles, a light-shielding material such as a metal such as chromium or a metal compound, and is thicker than the transflective layer 95. A light shielding layer (black matrix) 73 is formed.

Further, as shown in FIG. 9, the color filter 71 in the transmissive display region and the color filter 72 in the reflective display region have a thickness of 1.8 μm in the colored portion 71R in the red transmissive region, and a colored portion in the red reflective region. The thickness of 72R is 1.0 μm, and the thickness of the colored portion 71G in the green transmission region is 1.9 μm.
The film thickness of the colored portion 72G in the green reflective region is 0.9 μm, the film thickness of the colored portion 71B in the blue transmissive region is 1.8 μm, and the film thickness of the colored portion 72B in the blue reflective region is 1.1 μm.

As a method of manufacturing the color filters 71 and 72, the order of decreasing film thickness among the colored portions,
That is, the colored portions 72G, 72R, 72B, 71R, 71B, 71G are formed in this order.

In addition, since the light emitted from the colored portion 72G in the green reflective region has high visibility on the viewer side, the light emitted from the colored portion 72G in the green reflective region is desired to be light, and thus has the thinnest film thickness. ing.

Further, in FIG. 8, the surface of the substrate body 81a on which the color filter 71 in the transmissive display area, the color filter 72 in the reflective display area, and the light shielding layer 73 are formed is illustrated as being flat. In FIG. 9, it has an unevenness | corrugation. Therefore, the color filter 71 in the transmissive display area, the color filter 72 in the reflective display area, and the liquid crystal layer 8 of the light shielding layer 73.
On the side 5, an overcoat layer made of an organic film or the like is used to flatten the surface of the substrate body 81 a on which these are formed and to protect the color filter 71 in the transmissive display area and the color filter 72 in the reflective display area. 76 is formed.

A transparent electrode 91 is formed on the liquid crystal layer 85 side of the overcoat layer 76, and the liquid crystal layer 85 side outermost surface of the substrate body 81 a is used to regulate the orientation of liquid crystal molecules in the liquid crystal layer 85. An alignment film 77 is formed. As the alignment film 77, for example, a film made of an alignment polymer such as polyimide and the surface of which is rubbed can be exemplified. In practice, a retardation plate and a polarizer are sequentially attached to the opposite side of the substrate body 81a from the liquid crystal layer 85, but the illustration is omitted.

On the other hand, in the counter substrate 82, on the liquid crystal layer 85 side of the substrate body 82a, a transparent electrode 92 and an alignment film 96 are sequentially formed as shown in FIG. In practice, the substrate body 82a
A retardation plate and a polarizer are sequentially attached to the opposite side of the liquid crystal layer 85 side, but the illustration is omitted. Note that the structure of the alignment film 96 is the same as that of the alignment film 77 of the color filter substrate 81, and thus the description thereof is omitted.

In addition, a large number of spherical spacers 31 made of silicon dioxide, resin, or the like are arranged between the color filter substrate 81 and the counter substrate 82 (in the liquid crystal layer 85) in order to make the cell gap of the liquid crystal panel 78 uniform. ing.

In the manufacturing method of the liquid crystal device 70 according to the present embodiment, the colored portions are formed in the order of decreasing color thickness of the colored portions (colored portions 72G, 72R, 72B, 71R, 71B, 71G). As a result, all the colored portions 72G, 72R, 72B, 71R, 71B, 71G can be formed flat. Therefore, the liquid crystal device 70 having excellent display characteristics can be provided by using a color filter having excellent performance.
[Electronics]
FIG. 10 is a diagram illustrating an example of an electronic device in which the liquid crystal device 1 according to the embodiment is mounted. A mobile phone 200 shown in FIG. 10 includes the liquid crystal device 1 of the above embodiment as a display unit 201. With such a configuration, since the color filter 16 is in a good state, an electronic device capable of displaying a clearer image can be provided.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, the color filter is manufactured by the spin coat method, but a laminate method may be used. In the case of this method, the coloring material of each colored portion is formed into a film shape, and this colored portion is transferred to the substrate. Here, in the conventional manufacturing method, after forming the thick colored layer among the colored layers first, and then forming the coloring material 303 of the thin colored portion, as shown in FIG. The adhesion between the substrate 302 and the coloring material 303 at the end 301a is deteriorated. However, in the present invention, as shown in FIG. 11B, since the coloring material 306 of the colored portion is formed in the shallow concave portion 305 as compared with the conventional case, the adhesion between the substrate 307 and the coloring material 306 is good. 307
A colored portion can be formed with a uniform film thickness on the top.

Further, even when the laminating method is used, since the colored portion is formed in the concave portion between the colored portions having a shallow depth, the adhesion between the substrate and the colored portion can be improved.

1 is a plan view showing a liquid crystal device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line H-H ′ of the liquid crystal device of FIG. 1. It is a figure which shows the circuit structure of the liquid crystal device which concerns on this embodiment. FIG. 2 is a process diagram illustrating a method for manufacturing the liquid crystal device of FIG. 1. It is process drawing which shows an example of the manufacturing method of the conventional liquid crystal device. FIG. 2 is an enlarged view of a main part showing a color filter of the liquid crystal device of FIG. 1. It is a schematic plan view when the color filter and the light shielding layer provided in the liquid crystal device according to the second embodiment of the present invention are viewed from the liquid crystal layer side. It is a partial schematic sectional drawing of the liquid crystal device of this invention. It is a principal part enlarged view of the color filter board | substrate of the liquid crystal device of this invention. It is a perspective view which shows the whole structure of the electronic device of this invention. It is a top view in case the colored layer in each said embodiment is formed by the lamination method.

Explanation of symbols

A ... Pixel region (pixel), B ... Sub-pixel, 1 ... Liquid crystal device, 16 ... Color filter, 16B
, 16EG, 16R, 16YG ... colored portion (colored layer), 200 ... mobile phone (electronic device)

Claims (6)

A method of manufacturing a liquid crystal device including a color filter having a plurality of colored layers formed corresponding to a plurality of sub-pixels constituting a pixel,
The film thickness of at least one colored layer among the plurality of colored layers is different,
A method of manufacturing a liquid crystal device comprising a step of forming the plurality of colored layers in order of increasing film thickness among the plurality of colored layers. The method for manufacturing a liquid crystal device according to claim 1, wherein a colorant constituting the plurality of colored layers is applied on the substrate by a spin coating method. The method for manufacturing a liquid crystal device according to claim 1, wherein the plurality of colored layers are formed on the substrate by a laminating method. A liquid crystal device manufactured by the method for manufacturing a liquid crystal device according to claim 1. In the sub-pixel, a reflective display area and a transmissive display area are provided,
5. The liquid crystal device according to claim 4, wherein a thickness of the colored layer formed in the reflective display region is different from a thickness of the colored layer formed in the transmissive display region. An electronic apparatus comprising the liquid crystal device according to claim 4.

Images